package main

import "fmt"
import "strconv"
import "time"

func main() {

	now := time.Now()
	startTime := now.Unix()

	test03()
	
	now = time.Now()
	usedTime := now.Unix() - startTime

	fmt.Println("test03函数执行时间为", usedTime,
		"秒")
}

func test03() {
	str := ""
	for i := 0; i < 100000; i++ {
		str += "hello" + strconv.Itoa(i)
	}
}